— What do you know ________ Canadians?

— I know they ________ English and French. [ ]

A. at, speak

B. of, say

C. of, speak

D. about, say

患儿男，5岁。发热2天，微恶风寒，鼻塞流涕，咳嗽，眼睑红赤，泪水汪汪，口腔颊粘膜红赤，见有细小白色疹点，周围红晕，小便黄，舌苔薄黄。治疗首选方剂是

A．银翘散

B．清解透表汤

C．宣毒发表汤

D．透疹凉解汤

E．桑菊饮